Filling stop-motion.



l. snow. FILLING STOP MOTION.

APPLICATION FILED IULYZT. l9'l7.

Patented Aug. 13, 1918.

3m bmpw 62,1 jw vwwm position and the loom ISAAC SNOW, OF LAWRENCE, MASSACHUSETTS.

FILLING STOP-MOTION.

s gnification of Letters Patent. Patented Aug. 13, 1918.

Application filed July 27, 1917. Serial No. 183,174.

' motion of the type in which the actuator is given an operative movement on alternate picks of the loom only.

Such stop motions are commonly provided with a detector cooperating'with a grate mounted on the lay. When the shuttle is in the box adjacent to the stop motion the filling, if unbroken, extends across the grate and thus raises the fork or detector as the lay moves forward. The actuator is given its operative movement at the moment when the detector is thus raised to inoperative thus permitted tc continue lll operation. If the filling is broken or' exhausted the detector is not raised and the actuator operates to stop the loom.. Upon the alternate pi ks when the shuttle is in the box on the opposite side of the loom the actuator is inoperative.

Under normal. conditions this method of operation is satisfactory, but it not infrequcntly happens that -\vaste or filling becomes lodged on the filling forkgratc, thus raising the fork or detector upon every beat of the lay, whether or not the filling is present. Under these conditions the ordinary type of filling stop motion Wlll continue in operation indefinitely, even after the filling .in the shuttle is entirely exhaust ed.

It is the general object of my present invcntion to provide a filling stop motion which will stop the loom whenever conditions arise which operate the filling forkor detector when the shuttle is in the remote box.

With this general object in view, my invention in the preferred form comprises a. normally fixed stand upon which the filling I fork or detector is pivoted, an actuator controlled by the which is given an operative movement upon each alternate beat of the lay, connections from. the actuator to the shipper through which the loom me be stopped, and means tive as required.

An important feature of my invention etector effective to rcn-' der said connections operative or mopera-' consists in so constructing said detector that an obstruction of the filling fork grate, as by the weft thread, with the shuttle in the adjacent box, will render said actuator inoperative, while an obstruction of the grate with the shuttle in the opposite box will render said actuator operative to stop the loom.

My invention further relates to arrangements and combinations of parts hereinafter described and more particularly pointed out in the appended claims.

A preferred, form of my invention is shown in the drawings, in which Figure l is a sectional elevation of my improved filling stop motion;

Fig. 9 is a view similar to Fig. 1, but showing the parts in a ditl'erent position;

Fig. 3 is a top plan view of the Stop motion;

Fig. l is an enlargcd plan view of certain parts of the mechanism; t

Fig. 5 is a transverse sectional elevation takcn along lhc linc in Fig. 4, and- Fig. (3 is a dctail scctional clcvation showing further conditions of operation.

Referring to the drawings, my improved stop motion is shown mounted upon the breast bcam ll) of a loom ot' a usual type. The shipper lever is indicated in section at ll in Fig. 3, the lever being movable in a slot 12 formed in a bracket 13 secured to the breast beam 10. When the loom is in operation the shipper lever ,II is yieldingly held in a notch H and is engaged by the shipper finger l5 pivoted at it; to the bracket 13.

The arm Not the shipper linger cxtcnds into a recess 18 (Figs. l and 2) formed in the lower face of a slide '19 movably mounted in a guide plate 20. The slide it) is normally heldin the position shown in Figs.

1 and 3 by the spring pressure of the shipper lever 11 acting through the shipper linger 15 and arm 17. r

A stand 21 is pivoted at 22 to the rear end of the guide plate 20 and may be held r n normal position by a. lug 2-:5 which ongages the rear edge of the breast beam 10. i

A detector or filling t'ork 24 is pivoted at 25 to the stand 21, the pivot 25 normally remaining in fixed position relative to' the breast beam l().' The filling fork 24 is provided with a. forwardly extending forked member 26, the purpose of which will be hereinafter described. The fork 24 cooperates with a fork grate of the usual type, mounted on the lay and not shown herein. An actuator 27 extends upward through the stand 21 and slide 19 and may be Opel atively connected to the slide 19 by a link or loop 28. This loop normally engages a projection 29 Formed on the upper side'ot. the rear portion of the slide 19. Theactuator 27 is given a reciprocating motion on every alternate heat of the lay, and the mechanism for than reciprocating the ac tuator may be ot-the usual type which commonly comprises a cam mounted on the cam shaftof the loom and niaking'one revolution to each two picks of the loom. I

Reference to Fig. .l will show that the forked member 26 of the filling t'ork Zlnormally extends beneath the link 28 when the part are in operative position,withtrheshut- He in the adjacent shuttlobox. 'lheactluttor remains in the position shown in Fig; 1 while the lay heats up, the wettthrcad extending across the fork grate to the boxed shuttle moving: the fork 2% to the dotted line position in Fig. 1. The member .20 and the link 28 are thus raised to their dotted line positions, and are retained in such positions until the actuator has commit-need its t'or ward movement. The link is then passes over the projection .39 and the slide 19 is unmoved. As the lay moves back, the fork returns to the normal full line position shown in Fig. 1.

it, however, the filling is broken or exhausted the fork remains in the position shown in Fig. 2, and the link 28 engages the projection 23. as the actuator moves forward, thus moving the slide 19 and releasion" the shipper lever ll froin the notch 14, whereby the loom is topped.

It the shuttle is not properly boxed and engages the t'ork 24, the stand 21 swings upward about its pivot 2'2, thus prev-eating damage either tothe shuttle or to the stop motio'n.

I will now describe the operation of my improved mechanism when the tork grate becomes obstructed by vastoor filling. If

I the fork is raised when the shuttle is in the box adjacent the stop motion, the actuator is rendered inoperative as above described, and the actuator and link move to the dot ted line position shown in Fig. (3, in which position they remain until the shuttle is boxtfd at. the o 'iposite side of the loom. The

lay then moves forward a second time and any obstrut'tion upon the fork grate will again move the fork and raise the member 26 tothe full line position shown in Fig. 6. At this"point in the operation ot' the loom the actuator 27 is {i'VOIl its rearward movement to the position also shown in full lines fiueh movement slides the link 28 beneath the member 26 and into position to engage the projection 29 upon the next;

forward movementof the actuator. The parts remain in this position until the next heat of the lay, when the acttuitor is moved forward and the loom is stopped through the action of the slide 19 on the shipper finger .3 and lever 11.

Duringthis operation it will be noted that the member 26, being now above the link .28 is no longer efl'ectual to render the actuator inoperative, whether or not the fork is raised by filling or waste upon the grate upon the next beat of the loom with the shuttle in the adjacent. box.

1 have thus provided simple and eflcetive merhanisn'i for stopping the loom in the regular manner upon the failure or exhaustion of filling, and aiso for stopping the loom whenever the fork grate becomes obstructed to such an extent as to interfere with the normal operation of the filling Stop motion.

Having thus dcscribed my invention, it will be evident that; changes-and modifications can be made therein'hy those skilled in the art without (M nn-ting from the spirit and scope ot' my invention set forth in the claims, and I do not; wish to he 0therwise limited to the details herein disclosed, hut whatl claim is 1. A filling sto motion havin in combination, astan a filling for thereto, a slide n'lovable independentlyof said stand and fork, connections through which such movement of said slide is effective to stop the loom, an actuator, a connection between said actuator and said slide, and means associated with said fork and pivoted inoperative, but pern'iitting said connection to becomeoperative to move the slide and thereby stop the loom on breakage of filling and also when ,he. path of: the filling fork is obstructed at the time when the adjacent shuttle box is empty.

2. A filling st-o' motion having, in combination, a stand: a filling fork pivoted thereto, a slide movable independently of said stand and fork, connections through which such movement of said slide is effect ve to stop the loom, said slide having a pIOJBGtlOH thereon, an actuator, a link on said actuator effective to normally engage said projection and rendersaid slide 0pera= tive, and means associated with'said fork of t'ective to raise said link to inoperative position when the fork is moved.

ii. A filling stoJ) mot-ion having, incomhitiatiom a stan a. filling fork pivoted thereto, a' movable member, loom stopping mechanism controlled through said member,- an. actuator, asingle connect-orfrom Said ac tuator to said men'iber, anda device operated by said. fillingfork effective to place said connectt'ir in operative and inoperative positions, whereby said actuator is rendered said stand and fork, connections through Which such movement of saidslide is effective to stop the loom an actuator, a rear- Wardly extending membe normally depressed to operatively engage said slide, anda forwardly extending por-.

tion connected to said filling fork normally positioned beneath said member and effective to raise said member to inoperative position when the fork is rocked, said portion r on said actuator 'fixed my signature.

being moved to inoperative position above said member on the rocking of said fork when the adjacent shuttle box is empty.

5. A filling stop motion having, in combination, a filling fork, a slide, loom stopping mechanism controlled through said slide, means controlled by said fork effective to actuate said slide, and a stand comprising 5 fixed and movable parts, said fixed part forming a guideway for said slide, and said movable part supporting said filling fork normally in o erative position, but permitting removal t ereof under abnormal conditiorfs independently of said slide.

In testimony whereof I have hereunto af- ISAAC snow. 

